And the smell! Some combination of the oil burning and the smell of the seat. Man I love that smell.
Buy and then sell a sport bike. They're a TON of fun, if not in exactly the same way. They're also dramatically more dangerous.
Also incredible amounts of fun. However, I've always felt safer flying through the air on a dirt bike than riding a sport bike surrounded by hoards of distracted drivers paying more attention to their cells phones than their external environment.